Added Login Screen with follow up

Project/app/src/main/AndroidManifest.xml

@@ -9,7 +9,8 @@
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
         android:theme="@style/AppTheme">
-        <activity android:name=".MainActivity">
+        <activity android:name=".Overview_Screen"></activity>
+        <activity android:name=".Start_Screen">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
 

Project/app/src/main/java/com/example/mobileapp/MainActivity.java → Project/app/src/main/java/com/example/mobileapp/Overview_Screen.java

@@ -4,11 +4,11 @@ import androidx.appcompat.app.AppCompatActivity;
 
 import android.os.Bundle;
 
-public class MainActivity extends AppCompatActivity {
+public class Overview_Screen extends AppCompatActivity {
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
-        setContentView(R.layout.activity_main);
+        setContentView(R.layout.activity_overview__screen);
     }
 }

Project/app/src/main/java/com/example/mobileapp/Start_Screen.java

+package com.example.mobileapp;
+
+import androidx.appcompat.app.AppCompatActivity;
+
+import android.content.Intent;
+import android.os.Bundle;
+import android.view.View;
+import android.widget.Button;
+import android.widget.EditText;
+
+public class Start_Screen extends AppCompatActivity {
+
+    private EditText Email;
+    private EditText Password;
+    private Button Login;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+
+        Email = (EditText)findViewById(R.id.etMail);
+        Password = (EditText)findViewById(R.id.etPassword);
+        Login  = (Button)findViewById(R.id.btnLogin);
+        Login.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                validate(Email.getText().toString(), Password.getText().toString());
+            }
+        });
+
+    }
+
+    private void validate(String userName, String userPassword) {
+        if((userName.equals("Admin")) && (userPassword.equals("123456"))) {
+            Intent intent = new Intent(Start_Screen.this, Overview_Screen.class);
+            startActivity(intent);
+        }
+    }
+}

Project/app/src/main/res/layout/activity_main.xml

@@ -4,15 +4,43 @@
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    tools:context=".MainActivity">
+    tools:context=".Start_Screen">
 
-    <TextView
+    <Button
+        android:id="@+id/btnLogin"
+        android:layout_width="340dp"
+        android:layout_height="54dp"
+        android:background="#C5B358"
+        android:text="@string/log_in"
+        android:textColor="#141412"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintHorizontal_bias="0.492"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintVertical_bias="0.601" />
+
+    <EditText
+        android:id="@+id/etMail"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:text="Hello World!"
-        app:layout_constraintBottom_toBottomOf="parent"
-        app:layout_constraintLeft_toLeftOf="parent"
-        app:layout_constraintRight_toRightOf="parent"
+        android:layout_marginTop="160dp"
+        android:ems="10"
+        android:hint="@string/e_mail"
+        android:inputType="textPersonName"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toTopOf="parent" />
 
+    <EditText
+        android:id="@+id/etPassword"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:ems="10"
+        android:hint="@string/password"
+        android:inputType="textPassword"
+        app:layout_constraintBottom_toTopOf="@+id/btnLogin"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/etMail" />
 </androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file

Project/app/src/main/res/layout/activity_overview__screen.xml

+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".Overview_Screen">
+
+</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file

Project/app/src/main/res/values/strings.xml

 <resources>
     <string name="app_name">MobileApp</string>
+    <string name="log_in">LOG IN</string>
+    <string name="e_mail">E-MAIL</string>
+    <string name="password">PASSWORD</string>
 </resources>